+uint32_t mlx5_tx_update_ext_mp(struct mlx5_txq_data *txq, uintptr_t addr,
+ struct rte_mempool *mp);
+
+/**
+ * Provide safe 64bit store operation to mlx5 UAR region for both 32bit and
+ * 64bit architectures.
+ *
+ * @param val
+ * value to write in CPU endian format.
+ * @param addr
+ * Address to write to.
+ * @param lock
+ * Address of the lock to use for that UAR access.
+ */
+static __rte_always_inline void
+__mlx5_uar_write64_relaxed(uint64_t val, volatile void *addr,
+ rte_spinlock_t *lock __rte_unused)
+{
+#ifdef RTE_ARCH_64
+ rte_write64_relaxed(val, addr);
+#else /* !RTE_ARCH_64 */
+ rte_spinlock_lock(lock);
+ rte_write32_relaxed(val, addr);
+ rte_io_wmb();
+ rte_write32_relaxed(val >> 32,
+ (volatile void *)((volatile char *)addr + 4));
+ rte_spinlock_unlock(lock);
+#endif
+}
+
+/**
+ * Provide safe 64bit store operation to mlx5 UAR region for both 32bit and
+ * 64bit architectures while guaranteeing the order of execution with the
+ * code being executed.
+ *
+ * @param val
+ * value to write in CPU endian format.
+ * @param addr
+ * Address to write to.
+ * @param lock
+ * Address of the lock to use for that UAR access.
+ */
+static __rte_always_inline void
+__mlx5_uar_write64(uint64_t val, volatile void *addr, rte_spinlock_t *lock)
+{
+ rte_io_wmb();
+ __mlx5_uar_write64_relaxed(val, addr, lock);
+}
+
+/* Assist macros, used instead of directly calling the functions they wrap. */
+#ifdef RTE_ARCH_64
+#define mlx5_uar_write64_relaxed(val, dst, lock) \
+ __mlx5_uar_write64_relaxed(val, dst, NULL)
+#define mlx5_uar_write64(val, dst, lock) __mlx5_uar_write64(val, dst, NULL)
+#else
+#define mlx5_uar_write64_relaxed(val, dst, lock) \
+ __mlx5_uar_write64_relaxed(val, dst, lock)
+#define mlx5_uar_write64(val, dst, lock) __mlx5_uar_write64(val, dst, lock)
+#endif